AMC DOC. #: AMC7585_E (LF)
AMC7585
Feb 2005
5A L
OW
D
ROPOUT
R
EGULATOR
Copyright
2002, ADD Microtech Corp. 3 www.addmtek.com
ABSOLUTE MAXIMUM RATINGS (Note)
Input Voltage (V
IN
) 7V
Operating Junction temperature
150
O
C
Storage Temperature Range
-65
O
C to 150
O
C
Lead temperature (Soldering, 10 seconds)
300
O
C
Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground.
Currents are positive into, negative out of the specified terminal.
POWER DISSIPATION TABLE
Package
JA
(
O
C /W )
Derating factor ( mW/
O
C )
T
A
25
O
C
T
A
25
O
C
Power rating(mW)
T
A
=70
O
C
Power rating(mW)
T
A
= 85
O
C
Power rating (mW)
T
45 22.2
2775 1776 1443
TF
45 22.2
2775 1776 1443
ST/ST3
45 22.2
2775 1776 1443
ST/ST3F
45 22.2
2775 1776 1443
SJ 80
12.5
1562
1000
812
SJF 80
12.5
1562
1000
812
Note:
T
J
= T
A
+ (P
D
JA
)
P
D
: Power dissipation.
JA
: Thermal resistance from Junction to Ambient.
For T and ST/ST3 packages,
JT
= 3.0
O
C / W.
For SJ package,
JT
= 7.0
O
C /W.
T
J
= T
TAB
+ (P
D
JT
)
T
TAB
: Tab temperature.
JT:
Thermal resistance from junction to tab of the package.
1. The
JA
numbers are guidelines for the thermal performance of the device/PC-board system.
2.
All of the above assume no ambient airflow.
3.
If power consumption is over above rating, adequate heat sink is required to dissipate heat.
RECOMMENDED OPERATING CONDITIONS
Recommended Operating Conditions
Parameter
Symbol
Min.
Typ.
Max.
Units
Input Voltage
V
IN
2.75
7
V
Load Current (with adequate heatsinking)
I
O
0.010 5 A
Input Capacitor (V
IN
to GND)
1
F
Output Capacitor with ESR of 10
max., (V
OUT
to GND)
10
F
Operating Ambient Temperature Range
0
70
O
C
Operating junction temperature
T
J
125
O
C
AMC DOC. #: AMC7585_E (LF)
AMC7585
Feb 2005
5A L
OW
D
ROPOUT
R
EGULATOR
Copyright
2002, ADD Microtech Corp. 4 www.addmtek.com
BLOCK DIAGRAM
GND
V
IN
V
OUT
THERMAL
LIMIT
1.25V
V
REF
AMC7585-X.X circuit schematic
V
IN
ADJ
V
OUT
THERMAL
LIMIT
1.25V
V
REF
AMC7585-ADJ circuit schematic
AMC DOC. #: AMC7585_E (LF)
AMC7585
Feb 2005
5A L
OW
D
ROPOUT
R
EGULATOR
Copyright
2002, ADD Microtech Corp. 5 www.addmtek.com
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, V
IN
= V
OUT
+ 2V, I
O
= 10mA. These specifications apply operating ambient temperature
range, and are for DC characteristics only. (Low duty cycle pulse testing techniques are used which maintains
junction and case temperatures equal to the ambient temperature.)
AMC7585
Parameter
Symbol
Test Conditions
Min.
Typ.
Max.
Units
AMC7585-2.5 T
A
= 25
O
C
2.475 2.500 2.525
AMC7585-3.3 T
A
= 25
O
C
3.267 3.300 3.333
Output Voltage
AMC7585-5.0
V
OUT
T
A
= 25
O
C
4.950 5.000 5.050
V
AMC7585-2.5 2.460
2.500
2.540
AMC7585-3.3 3.247
3.300
3.353
Output Voltage
AMC7585-5.0
V
OUT
I
O
= 10mA to 5A
4.920 5.000 5.080
V
(Note 1)
1.238 1.250 1.262
Reference
Voltage
AMC7585-ADJ V
REF
I
O
= 10mA to 5A, (Note 1)
1.230 1.250 1.270
V
Line Regulation (Note 2)
V
OI
(1.5V + V
OUT
)
V
IN
7V
0.04
0.2
%
Load regulation (Note 2)
V
OL
I
O
= 10mA to 5A
0.08
0.3
%
I
O
= 10mA
1.00
1.15
Dropout Voltage
V (Note
3)
I
O
= 5A
1.15
1.30
V
Quiescent Current
( for AMC7585-X.X)
I
Q
V
IN
7V, I
O
= 10mA to 3A
8
13
mA
Adjust Pin Current
( for AMC7585-ADJ)
I
ADJ
50
120
A
Current Limit
I
CL
(V
IN
- V
OUT
)=2V
5.1
6.8
A
Minimum Load Current (Note 4) Imin
5
10
mA
Ripple Rejection (Note 5)
R
R
V
RIPPLE
= 1V
PP
, I
O
= 100mA,
f
O
=120Hz
60
80
dB
Note 1 Output voltage is set to be 2.5V.
Note 2:
Line and load regulations are guaranteed up to maximum power dissipation determined by input/output
differential and the output current. However, the maximum power will not be available over the full
input/output voltage range.
Note 3: The specifications represent the minimum input/output voltage required to maintain 1% regulation.
Note 4: The minimum load current is the minimum current required to maintain regulation. Normally the current in
the resistor divider used to set the output voltage is selected to meet the minimum load current requirement.
Note 5: These parameters, although guaranteed, are not tested in production prior to shipment
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